I am trying to flash an 02 gmc over to a dsp5 OS. I installed the switch and have verfied that the switch pin is in the correct position and I grounded the ground wire to the truck. When I flash the Dsp 5 file into the truck it loads correctly and the truck will start and run fine for about 15-20 seconds then it will die and relays under the hood start clicking. the truck will not restart while the relays are clicking, but if you turn the switch off for 15 seconds and let it reset, it will start and run until it dies again and the clicking returns. I have pulled all the proper fuses and flashed the truck about 5 times with the same results. I can flash it back to the stock os and it runs fine no problems. Anybody seen this before?